405222101 has 8 divisors (see below), whose sum is σ = 426743520. Its totient is φ = 383720112.

The previous prime is 405222071. The next prime is 405222121. The reversal of 405222101 is 101222504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405222101 - 2²² = 401027797 is a prime.

It is a super-2 number, since 2×405222101² = 328409902277708402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405222121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60926 + ... + 67248.

It is an arithmetic number, because the mean of its divisors is an integer number (53342940).

Almost surely, 2^405222101 is an apocalyptic number.

It is an amenable number.

405222101 is a deficient number, since it is larger than the sum of its proper divisors (21521419).

405222101 is a wasteful number, since it uses less digits than its factorization.

405222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9715.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 405222101 is about 20130.1291848811. The cubic root of 405222101 is about 739.9988440449.

Adding to 405222101 its reverse (101222504), we get a palindrome (506444605).

The spelling of 405222101 in words is "four hundred five million, two hundred twenty-two thousand, one hundred one".